feat(teams): the Team read API, the moderation routes, and Admin -> Teams

The eighteen routes of docs/website/TEAMS.md §2.11, their OpenAPI annotations,
and the staff screen that drives them.

Two rules shape the read model. Hidden means absent from every public surface --
the index, the lookup and the roster alike, and a hidden Team 404s
indistinguishably from one that does not exist, because "absent" includes not
confirming it is there. And staleness is surfaced rather than silent: every
public payload carries { configured, stale, lastSyncAt }, so a page can say how
recently the projection was confirmed instead of presenting stale data as
current.

The public roster withholds both the member key and the user id -- one is a
game-internal identifier, the other names a site account. `linked` answers the
only question a public page has without publishing which account. The module's
per-audience field projection is phase 3's; this is a conservative core one.

The §2.9 gate is enforced per REQUEST, not per route. A moderator may call all
eighteen; three of them mean something different when they do, and the server
decides from the role it re-validates on every request rather than from a token
claim. The client has no "file as request" argument to get wrong.

Found by booting the real server against the real database, and not by any test:
**the index and the by-slug lookup disagreed about what exists.** listPublic was
keyed on a registered team provider while findBySlug is not, so with no module
installed `/teams` returned an empty list while `/teams/:slug/members` served a
full roster -- the index denying a Team that direct URLs answered for in full.
The rows are core's and they outlive the module that filled them: an uninstalled
module leaves a projection that is unmaintained, not one that stopped existing,
and `configured: false` is how a client learns that. The read side no longer
takes the provider into account at all. There is now a test named for the
property.

Also verified live: the public routes answer anonymously, an unknown and a hidden
slug both 404, the player and admin tiers 401 an anonymous caller, a seeded
roster projects correctly, and the reconciler logs that it is staying idle with
no provider registered rather than failing a boot.

Process obligations, all done: #swagger.* annotations on every route, `npm run
swagger` regenerated (18 paths in the spec, no dangling $refs, and the schemas
they reference added), `npm run routes:manifest` regenerated -- additions only,
184 public routes -- and BACKEND_DESIGN.md updated across the schema section and
all three tier tables.

Admin -> Teams follows the ModulesAdmin precedent: everything that decides what a
row SAYS lives in lib/teamAdmin.js, which is plain JS with tests, and the view
renders it. That split earns itself here specifically -- the screen's job is to
make "the shard has no Teams" and "core has not been able to ask for two hours"
impossible to confuse, and those two produce the same empty table. The four
freshness states are named and tested for exactly that reason, and the last
provider error is shown verbatim rather than paraphrased.

The button labels follow the caller's role: a moderator sees "Request publish",
so the pending result is not a surprise. Hiding is offered to everyone with no
gate, matching the server.

Server 894 passed, client 206 passed, client build clean. 17 route tests, 20
client display tests.

Refs docs/website/TEAMS.md §2.11, Part 12 phase 2

Co-Authored-By: Claude <noreply@anthropic.com>

server/src/router/v1/public/teams.router.js

@@ -0,0 +1,54 @@
+// Public · Teams — the anonymous Team surface (TEAMS.md §2.11).
+//
+// Mounted at /api/v1/public/teams by public/index.js. No group gate: this is the
+// anonymous surface, and `siteMode` is applied per route as everywhere else in
+// this tier — during maintenance only an admin with a valid session sees content.
+//
+// Declaration order: '/' is literal and precedes the two :slug routes, and
+// '/:slug/members' is deeper than '/:slug', so nothing here can shadow anything
+// else.
+
+const express = require('express')
+
+const ctrl = require('./teams.controller')
+const siteMode = require('../../../middleware/siteMode')
+
+const teamsRouter = express.Router()
+
+teamsRouter.get(
+  '/',
+  // #swagger.tags = ['Public · Teams']
+  // #swagger.summary = 'List active, publicly visible Teams'
+  // #swagger.description = 'Teams hidden by reserved-name screening or by staff are absent. The response carries { stale, lastSyncAt } so a client can say how recently the projection was confirmed against the game.'
+  // #swagger.parameters['limit'] = { in: 'query', required: false, schema: { type: 'integer' }, description: 'Page size, max 200 (default 50).' }
+  // #swagger.parameters['offset'] = { in: 'query', required: false, schema: { type: 'integer' }, description: 'Rows to skip (default 0).' }
+  /* #swagger.responses[200] = { description: 'Publicly visible Teams, with sync freshness', content: { "application/json": { schema: { $ref: "#/components/schemas/PublicTeamList" } } } } */
+  siteMode,
+  ctrl.listTeams,
+)
+
+teamsRouter.get(
+  '/:slug',
+  // #swagger.tags = ['Public · Teams']
+  // #swagger.summary = 'Get one Team by slug'
+  // #swagger.description = 'An archived Team still resolves, read-only, and names its successor when it was renamed — an old bookmark or Discord link lands somewhere that explains itself. A hidden Team returns 404, indistinguishable from one that does not exist.'
+  // #swagger.parameters['slug'] = { in: 'path', required: true, schema: { type: 'string' }, description: 'The Team slug.' }
+  /* #swagger.responses[200] = { description: 'The Team', content: { "application/json": { schema: { $ref: "#/components/schemas/PublicTeam" } } } } */
+  /* #swagger.responses[404] = { description: 'No such Team, or it is hidden', content: { "application/json": { schema: { $ref: "#/components/schemas/Error" } } } } */
+  siteMode,
+  ctrl.getTeam,
+)
+
+teamsRouter.get(
+  '/:slug/members',
+  // #swagger.tags = ['Public · Teams']
+  // #swagger.summary = 'Get a Team roster'
+  // #swagger.description = 'In-game display names only. A member key is a game-internal identifier and a user id names a site account; neither is published. `linked` answers whether a character has an account behind it without saying which.'
+  // #swagger.parameters['slug'] = { in: 'path', required: true, schema: { type: 'string' }, description: 'The Team slug.' }
+  /* #swagger.responses[200] = { description: 'The roster, with sync freshness', content: { "application/json": { schema: { $ref: "#/components/schemas/PublicTeamRoster" } } } } */
+  /* #swagger.responses[404] = { description: 'No such Team, or it is hidden', content: { "application/json": { schema: { $ref: "#/components/schemas/Error" } } } } */
+  siteMode,
+  ctrl.getRoster,
+)
+
+module.exports = teamsRouter